A group of government-employed paranormal investigators head into the countryside to investigate a string of disappearances, only to find themselves dealing with a supernatural threat like nothing they've ever encountered before...
Following a string of mysterious disappearances linked to the McDonald's drink "The Grimace Shake", two roommates receive a the replacement, a McDonald's "Shamrock Shake", which they didn't order.
Our story picks up right where When Harry Met Harry 1 left off, a few days after the murder of Harry's beloved mirror. Word of Harry's love for himself gets around quick, and Harry becomes the prime target of a bully and his friends. But how long will Harry put up with things, before he unleashes...